03a5f9f0fd
probes to userland programs and libraries without also needing to link libelf. dtrace -G places the __SUNW_dof symbol at the beginning of the DOF (DTrace probe and provider metdata) section in the generated object file; drti.o now just uses this symbol to locate the section. A complication occurs when multiple dtrace-generated object files are linked together, since the __SUNW_dof symbol defined in each file is global. This is handled by using objcopy(1) to convert __SUNW_dof to a local symbol once drti.o has been linked with the generated object file. Upstream, this is done using a linker feature not present in GNU ld. Differential Revision: https://reviews.freebsd.org/D1757 Reviewed by: rpaulo MFC after: 1 month Relnotes: yes
223 lines
5.2 KiB
Makefile
223 lines
5.2 KiB
Makefile
# $FreeBSD$
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#
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# The include file <bsd.dep.mk> handles Makefile dependencies.
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#
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#
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# +++ variables +++
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#
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# CTAGS A tags file generation program [gtags]
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#
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# CTAGSFLAGS Options for ctags(1) [not set]
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#
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# DEPENDFILE dependencies file [.depend]
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#
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# GTAGSFLAGS Options for gtags(1) [-o]
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#
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# HTAGSFLAGS Options for htags(1) [not set]
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#
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# MKDEP Options for ${MKDEPCMD} [not set]
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#
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# MKDEPCMD Makefile dependency list program [mkdep]
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#
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# SRCS List of source files (c, c++, assembler)
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#
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# DPSRCS List of source files which are needed for generating
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# dependencies, ${SRCS} are always part of it.
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#
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# +++ targets +++
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#
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# cleandepend:
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# Remove depend and tags file
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#
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# depend:
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# Make the dependencies for the source files, and store
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# them in the file ${DEPENDFILE}.
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#
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# tags:
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# In "ctags" mode, create a tags file for the source files.
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# In "gtags" mode, create a (GLOBAL) gtags file for the
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# source files. If HTML is defined, htags(1) is also run
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# after gtags(1).
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.if !target(__<bsd.init.mk>__)
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.error bsd.dep.mk cannot be included directly.
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.endif
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CTAGS?= gtags
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CTAGSFLAGS?=
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GTAGSFLAGS?= -o
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HTAGSFLAGS?=
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.if ${CC} != "cc"
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MKDEPCMD?= CC='${CC} ${DEPFLAGS}' mkdep
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.else
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MKDEPCMD?= mkdep
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.endif
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DEPENDFILE?= .depend
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# Keep `tags' here, before SRCS are mangled below for `depend'.
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.if !target(tags) && defined(SRCS) && !defined(NO_TAGS)
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tags: ${SRCS}
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.if ${CTAGS:T} == "gtags"
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@cd ${.CURDIR} && ${CTAGS} ${GTAGSFLAGS} ${.OBJDIR}
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.if defined(HTML)
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@cd ${.CURDIR} && htags ${HTAGSFLAGS} -d ${.OBJDIR} ${.OBJDIR}
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.endif
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.else
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@${CTAGS} ${CTAGSFLAGS} -f /dev/stdout \
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${.ALLSRC:N*.h} | sed "s;${.CURDIR}/;;" > ${.TARGET}
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.endif
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.endif
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.if defined(SRCS)
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CLEANFILES?=
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.if !exists(${.OBJDIR}/${DEPENDFILE})
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.for _S in ${SRCS:N*.[dhly]}
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${_S:R}.o: ${_S}
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.endfor
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.endif
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# Lexical analyzers
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.for _LSRC in ${SRCS:M*.l:N*/*}
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.for _LC in ${_LSRC:R}.c
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${_LC}: ${_LSRC}
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${LEX} ${LFLAGS} -o${.TARGET} ${.ALLSRC}
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.if !exists(${.OBJDIR}/${DEPENDFILE})
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${_LC:R}.o: ${_LC}
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.endif
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SRCS:= ${SRCS:S/${_LSRC}/${_LC}/}
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CLEANFILES+= ${_LC}
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.endfor
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.endfor
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# Yacc grammars
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.for _YSRC in ${SRCS:M*.y:N*/*}
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.for _YC in ${_YSRC:R}.c
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SRCS:= ${SRCS:S/${_YSRC}/${_YC}/}
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CLEANFILES+= ${_YC}
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.if !empty(YFLAGS:M-d) && !empty(SRCS:My.tab.h)
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.ORDER: ${_YC} y.tab.h
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${_YC} y.tab.h: ${_YSRC}
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${YACC} ${YFLAGS} ${.ALLSRC}
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cp y.tab.c ${_YC}
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CLEANFILES+= y.tab.c y.tab.h
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.elif !empty(YFLAGS:M-d)
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.for _YH in ${_YC:R}.h
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${_YH}: ${_YC}
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${_YC}: ${_YSRC}
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${YACC} ${YFLAGS} -o ${_YC} ${.ALLSRC}
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SRCS+= ${_YH}
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CLEANFILES+= ${_YH}
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.endfor
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.else
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${_YC}: ${_YSRC}
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${YACC} ${YFLAGS} -o ${_YC} ${.ALLSRC}
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.endif
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.if !exists(${.OBJDIR}/${DEPENDFILE})
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${_YC:R}.o: ${_YC}
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.endif
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.endfor
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.endfor
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# DTrace probe definitions
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.if ${SRCS:M*.d}
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CFLAGS+= -I${.OBJDIR}
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.endif
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.for _DSRC in ${SRCS:M*.d:N*/*}
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.for _D in ${_DSRC:R}
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DHDRS+= ${_D}.h
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${_D}.h: ${_DSRC}
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${DTRACE} -xnolibs -h -s ${.ALLSRC}
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SRCS:= ${SRCS:S/^${_DSRC}$//}
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OBJS+= ${_D}.o
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CLEANFILES+= ${_D}.h ${_D}.o
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${_D}.o: ${_DSRC} ${OBJS:S/^${_D}.o$//}
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${DTRACE} -xnolibs -G -o ${.TARGET} -s ${.ALLSRC}
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.if defined(LIB)
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CLEANFILES+= ${_D}.So ${_D}.po
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${_D}.So: ${_DSRC} ${SOBJS:S/^${_D}.So$//}
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${DTRACE} -xnolibs -G -o ${.TARGET} -s ${.ALLSRC}
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${_D}.po: ${_DSRC} ${POBJS:S/^${_D}.po$//}
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${DTRACE} -xnolibs -G -o ${.TARGET} -s ${.ALLSRC}
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.endif
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.endfor
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.endfor
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beforedepend: ${DHDRS}
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beforebuild: ${DHDRS}
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.endif
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.if !target(depend)
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.if defined(SRCS)
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depend: beforedepend ${DEPENDFILE} afterdepend
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# Tell bmake not to look for generated files via .PATH
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.NOPATH: ${DEPENDFILE}
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# Different types of sources are compiled with slightly different flags.
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# Split up the sources, and filter out headers and non-applicable flags.
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MKDEP_CFLAGS= ${CFLAGS:M-nostdinc*} ${CFLAGS:M-[BIDU]*} ${CFLAGS:M-std=*} \
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${CFLAGS:M-ansi}
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MKDEP_CXXFLAGS= ${CXXFLAGS:M-nostdinc*} ${CXXFLAGS:M-[BIDU]*} \
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${CXXFLAGS:M-std=*} ${CXXFLAGS:M-ansi} ${CXXFLAGS:M-stdlib=*}
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DPSRCS+= ${SRCS}
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${DEPENDFILE}: ${DPSRCS}
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rm -f ${DEPENDFILE}
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.if !empty(DPSRCS:M*.[cS])
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${MKDEPCMD} -f ${DEPENDFILE} -a ${MKDEP} \
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${MKDEP_CFLAGS} ${.ALLSRC:M*.[cS]}
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.endif
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.if !empty(DPSRCS:M*.cc) || !empty(DPSRCS:M*.C) || !empty(DPSRCS:M*.cpp) || \
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!empty(DPSRCS:M*.cxx)
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${MKDEPCMD} -f ${DEPENDFILE} -a ${MKDEP} \
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${MKDEP_CXXFLAGS} \
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${.ALLSRC:M*.cc} ${.ALLSRC:M*.C} ${.ALLSRC:M*.cpp} ${.ALLSRC:M*.cxx}
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.endif
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.if target(_EXTRADEPEND)
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_EXTRADEPEND: .USE
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${DEPENDFILE}: _EXTRADEPEND
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.endif
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.ORDER: ${DEPENDFILE} afterdepend
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.else
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depend: beforedepend afterdepend
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.endif
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.if !target(beforedepend)
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beforedepend:
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.else
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.ORDER: beforedepend ${DEPENDFILE}
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.ORDER: beforedepend afterdepend
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.endif
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.if !target(afterdepend)
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afterdepend:
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.endif
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.endif
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.if !target(cleandepend)
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cleandepend:
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.if defined(SRCS)
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.if ${CTAGS:T} == "gtags"
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rm -f ${DEPENDFILE} GPATH GRTAGS GSYMS GTAGS
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.if defined(HTML)
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rm -rf HTML
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.endif
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.else
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rm -f ${DEPENDFILE} tags
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.endif
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.endif
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.endif
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.if !target(checkdpadd) && (defined(DPADD) || defined(LDADD))
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_LDADD_FROM_DPADD= ${DPADD:R:T:C;^lib(.*)$;-l\1;g}
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# Ignore -Wl,--start-group/-Wl,--end-group as it might be required in the
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# LDADD list due to unresolved symbols
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_LDADD_CANONICALIZED= ${LDADD:N:R:T:C;^lib(.*)$;-l\1;g:N-Wl,--[es]*-group}
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checkdpadd:
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.if ${_LDADD_FROM_DPADD} != ${_LDADD_CANONICALIZED}
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@echo ${.CURDIR}
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@echo "DPADD -> ${_LDADD_FROM_DPADD}"
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@echo "LDADD -> ${_LDADD_CANONICALIZED}"
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.endif
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.endif
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